books.google.com - Probability and Statistics are studied by most science students, usually as a second- or third-year course. Many current texts in the area are just cookbooks and, as a result, students do not know why they perform the methods they are taught, or why the methods work. The strength of this book is that...https://books.google.com/books/about/A_Modern_Introduction_to_Probability_and.html?id=XLUMIlombgQC&q=approximation&utm_source=gb-gplus-shareA Modern Introduction to Probability and Statistics